Bela Talbot acquires supernatural objects for rich clients, and also runs scams selling fake charms and running seances
According to Bobby, Bela knows her way around the hunting world, but occupies it in a different way to typical hunters
Has some skills in contacting the dead and uses them as an information source. In 3.03 Bad Day at Black Rock she tells Dean she used a Ouija Board to find John's lock-up, and in 3.07 Fresh Blood, a spirit tells her where Gordon is.
Has an apartment in Queens, New York
Recently returned from the Middle East 3.03
Lives with a Siamese cat
Is responsible for the death of a close relative 3.06

Bela tries to obtain and sell a Rabbit's Foot (the highest bid seems to be $1.5 million). She finds out that it is in a curse box in a storage container of John's by communicating with the foot's victims via a Ouija Board, and pays thieves to retrieve it for her.

Ultimately, falling victim to the curse herself, she's forced to help Sam and Dean destroy it.

Bela reveals more of her character by telling Sam & Dean about how she seemingly scams rich customers (such as Gertrude Case) by holding seances for them & selling them supernatural charms.

At first she seems to be working the same job as Sam & Dean (Ghost Ship), but it turns out to be an elaborate manipulation - with their involuntary help, she steals the Hand of Glory, which she sells to a client.

When Bela herself sees the Ghost Ship, she turns to Sam and Dean for help. It is revealed that this particular ship - the Espírito Santo only appears to those who have spilled the blood of a family member, but Bela refuses to share this part of her history.

By summoning the brother of the Vengeful Spirit, the spirit is put to rest and Bela escapes death. She gives Sam and Dean $10,000 for helping her.

In Fresh Blood, Gordon has escaped from prison, and tracks down Bela after he finds out she had been working with the Winchesters. Although he threatens to shoot her, she only reveals their whereabouts when Gordon gives her a priceless Mojo Bag.

When Dean later deduces that Bela led Gordon to them, he calls her and threatens to kill her. In an attempt to avert this, Bela contacts a spirit, who reveals Gordon's whereabouts. She passes this information onto Dean.